Fix unregistering of thread created by intercepted pthread_create on NaCl

(a cherry-pick of commit ee779ffc5 from 'master')

* pthread_start.c [GC_PTHREADS && !GC_WIN32_THREADS && NACL]
(GC_pthread_start_inner): Call GC_thread_exit_proc(me) before return.

1 files changed, 5 insertions, 3 deletions

diff --git a/pthread_start.c b/pthread_start.c
index d99026b0..c1f6a5fe 100644
--- a/pthread_start.c
+++ b/pthread_start.c
@@ -60,10 +60,12 @@ GC_INNER_PTHRSTART void * GC_CALLBACK GC_inner_start_routine(
 # endif
   me -> status = result;
   GC_end_stubborn_change(me); /* cannot use GC_dirty */
-# ifndef NACL
+  /* Cleanup acquires lock, ensuring that we can't exit while   */
+  /* a collection that thinks we're alive is trying to stop us. */
+# ifdef NACL
+    GC_thread_exit_proc((void *)me);
+# else
     pthread_cleanup_pop(1);
-    /* Cleanup acquires lock, ensuring that we can't exit while         */
-    /* a collection that thinks we're alive is trying to stop us.       */
 # endif
   return result;
 }